This lightsaber, crafted by Dooku during his tenure as a Jedi Padawan, would later be wielded by the future leader of the Confederacy of Independent Systems and Sith Lord. After achieving the rank of Jedi Knight, Dooku eventually retired this initial weapon, constructing a new and superior lightsaber with a distinctive design that served him throughout his careers as a Jedi Master and Sith.
The first mention of Dooku's initial lightsaber appeared in the reference book Star Wars: Absolutely Everything You Need to Know, published in 2015.
There are conflicting accounts concerning the timeline of when Dooku stopped using this lightsaber and instead created a new one that he employed for the remainder of his days. Absolutely Everything You Need to Know and its updated version both indicate that he used his second lightsaber as a Jedi Knight, but Star Wars: The Complete Visual Dictionary, New Edition claims he constructed it while holding the rank of Jedi Master.